J-block siding



FIG. 1 is a front perspective view of a J-block siding showing my new design;

FIG. 2 is a bottom and rear perspective view thereof;

FIG. 3 is a top and rear perspective view thereof;

FIG. 4 is a top view thereof; and,

FIG. 5 is a section view thereof taken on line 5-5 in FIG. 4. 

CLAIM The ornamental design J-block siding, as shown and described. 